A new start

lib/deploy/default.nix

@@ -0,0 +1,51 @@
+{ lib, inputs }:
+
+let
+  inherit (inputs) deploy-rs;
+in
+rec {
+  ## Create deployment configuration for use with deploy-rs.
+  ##
+  ## ```nix
+  ## mkDeploy {
+  ##   inherit self;
+  ##   overrides = {
+  ##     my-host.system.sudo = "doas -u";
+  ##   };
+  ## }
+  ## ```
+  ##
+  #@ { self: Flake, overrides: Attrs ? {} } -> Attrs
+  mkDeploy = { self, overrides ? { } }:
+    let
+      hosts = self.nixosConfigurations or { };
+      names = builtins.attrNames hosts;
+      nodes = lib.foldl
+        (result: name:
+          let
+            host = hosts.${name};
+            user = host.config.metacfg.user.name or null;
+            inherit (host.pkgs) system;
+          in
+          result // {
+            ${name} = (overrides.${name} or { }) // {
+              hostname = overrides.${name}.hostname or "${name}";
+              profiles = (overrides.${name}.profiles or { }) // {
+                system = (overrides.${name}.profiles.system or { }) // {
+                  path = deploy-rs.lib.${system}.activate.nixos host;
+                } // lib.optionalAttrs (user != null) {
+                  user = "root";
+                  sshUser = user;
+                } // lib.optionalAttrs
+                  (host.config.metacfg.security.doas.enable or false)
+                  {
+                    sudo = "doas -u";
+                  };
+              };
+            };
+          })
+        { }
+        names;
+    in
+    { inherit nodes; };
+}